Dr Taran Gyanchandani, acting CEO of the hospital, said, “We are doing the needful...she is under strict observation. At the moment we can’t say anything.”

A gangrape case has been registered in N M Joshi Marg police station.

The statement of the victim’s friend has been recorded and sketches of the culprits are being prepared, police said.

They claimed the victim has identified two of the accused by their names. The girl told police that two of them were calling each other as Rupesh and Sajid, they said, adding that some drug addicts have been picked up from the area for questioning.

“This is a very serious matter. We have taken note of it. The accused will be arrested soon,” Mr. Patil told reporters outside the hospital.

He said Mumbai Police Commissioner Satyapal Singh has been directed to ensure that the culprits are arrested soon.

In a statement given to police, the girl said the five goons were present in the Shakti Mills compound. They started making lewd remarks and harassed her. When her friend intervened, two of them assaulted him. Three others took the woman inside the dilapidated structure and raped her.